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(No Model.) 3 Sheets-Sheet 1.

v M. STIRN. MACHINE FOR MAKING BUTTONS FROM PLASTIC MATERIAL. No. 482,144. Patented Sep 6, 1892..

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WITNESSES:

(No Model.) 8 Sheets-Sheet 2.

M. STIRN. MACHINE FOR MAKING BUTTONS FROM PLASTIC MATERIAL. No. 482,144. Patented Sept. 6, 1892.

ATTORNEYS 3 Sheets-Sheet 3.

(No Mqdel.)

M STIRN MACHINE FOR MAKING BUTTONS FROM PLASTIC MATERIAL. No. 482,144.

Patented Sept. 6, 1892.

UNITED STATES PATENT OFFICE.

MAX STIRN, OF NEW? YORK, N. Y., ASSIGNOR OF ON E-HALF TO LEO STIRN,

OF SAME PLACE. I

MACHINE FOR MAKING BUTTONS FROM PLASTIC MATERIAL.

SPECIFICATION forming part of Letters Patent No. 482,144, dated September 6, 1892.

Application filed November 6, 1891- Serial No. 411,046- (No model.)

To all whom it may concern.-

Be it known that 1, MAX STIRN,a citizen of the United States, and aresident of the city of New York, in the county and State of New York, have invented certain new and useful Improvements in Machines for Making Buttons from Plastic Material, of which the following is a specification.

This invention relates to a new and improved machine for making glass or composition buttons; and the object of my invention is to produce a machine of this kind which is so constructed as to automatically deliver and hold the eyelet and introduce the same in the button in the operation of shaping and mold ing said button.

The invention consists in a machine for making buttons from plastic materials, constructed with a slide carrying part of the mold, a sliding eyelet carrier and feeder, and springjaws in one of the molds for holding the eyelet while single-molding the button, and a le ver for operating the several parts.

The invention also consists in the construction and combination of parts and details, which will be fully described hereinafter, and finally pointed out in the claims.

In the accompanying drawings, Figure 1 is a plan view of II] y im proved machine for making buttons, parts being shown in horizontal section. Fig. 2 is a front view of the same, parts being shown in longitudinal section on theline 2 2 of Fig. 1. Fig. 3 is a vertical transverse sectional view-of the machine on the line 3 3 of Fig. 1. Fig. 4 is a vertical longitudinal sectional view on the line 4. at of Fig. 1, showing the eyelet-holding jaws open. Fig. 5 is a similar view showing the jaws closed and the sliding sleeve pushed forward. Fig. 6 is a longitudinal sectional View on the line 6 6 of Fig. 1. Fig. 7 is a detail view of the hook-lever. Fig.8 is an end view of the eyelet-holding jaws. Fig. 9 is an inside view of one of the jaws. Fig. 10 is a transverse sectional view on the line 10 10 of Fig. 9. Figs. 11 and 12 are views of the eyelets. Fig. 13 is a rear View, and Fig. 14 a side view, of the button made on my improved machine.

Similar letters of reference indicate corresponding parts.

The entire machine rests upon the base plate A, and from said base-plate two standards B B project upward, and on the same a slide B is guided to move horizontally, said slide B being provided at one end with a downwardly-projecting arm B in which an adjustable stop or screw B is held, which stop can strike against one of the standards and serves to limit the throw of said slide B. On the opposite end of the slide a hub G is formed, and in the end surface of said hub the solid half of the mold for the button is formed. A collar C, havinga cutting-edge O is mounted to slide on said hub O, and said collar is provided with the angular groove (3 adapted to receive the prongs of a fork D, formed on one end of a rod D, guided in one of the standards B and connected with the crank-arm D of a rocking shaft D mounted in the lug D-* of the slide B, the purpose of which will be described hereinafter. The box E, arranged below the slide B, is pivoted to the same, so as to turn on said slide Bin the horizontal plane. The handle-lever F, passing through the said box E, is pivoted in the same by lateral pivots, so as to adapt said handlelever to swing laterally and vertically, which lever is provided with a suitable handle projecting beyond the base-plate, as shown in Fig. 1. The lever F is guided between the adjacent edges of two horizontal bars F F, fastened to the fronts of the standards B, the bar F being pivoted with a notch F in its bottom edge and the bar F to a notch F in its upper edge, said notches being separated a short distance from each other and of suflicient size and depth to receive the lever F. Said lever F passes through a vertically-slotted guide G, pivoted verticallyin the bottom plate A and in the bridge G of one of the bearings B, said guide-piece G forming a fulcrum for the horizontal swinging movements of lever F. The said lever F is provided at its inner end with the longitudinal slot G adapted to receive the pin G projecting laterally from the crank-arm G3 on one end of a rocking shaft H, mounted in bearings H of the base-plate. Said rocking shaft is provided with a crank-arm H pivotally connected with a slide J, having a stop J on its pivoted end and guided horizontally in the standard J on thebase-plate. From said slide J a rod K projects upward and carries a block K and adapted to be locked at different elevations on the rod K by means of a bindingscrew.

A short distance from the vertical rod K a vertical rod L, approximately U-shaped in cross-section, is arranged, the upperend of said rod L being held in the block K. A number of eyelets a or a, Figs. 11 and 12, are mounted on said rod L, as shown, one eyelet resting upon the other. The lower end of the rod L is a short distance from the upper surface of the slide J, as shown in Fig. 4, and at one side of said lower end of the rod L a guard-plate L'is arranged, against which the lower eyelets on the rod L rest, said plate L being parallel with the edge of the slide J. A cam-lever M, having cam projections M and M ,is pivoted on the upper surface of the slide J, and one end of the same is pivotally connected with the pusher N, suitably guided in a transverse groove in the upper surface of the slide J. On the upper surface of the standard J the cam-guide 0, provided with the shoulder O, and the the cam-guide 0 provided with the shoulder O are fixed and are adapted to act on the cam projections M and M in a manner that will be set forth hereinafter. The rocking shaft H is also pro vided with an arm P, which is provided with a cam-piece P having a bevel P which is adapted to act on the end of the lever Q, pivoted to the standard Q of the base-plate, the opposite end of said lever Q being adapted to act on a block R, in which are screwed two springjaws S S, guided in a sleeve R, held in the standard R of the base-plate A, the end of said sleeve R having a recess R for receiving the heads of the jaws and the annular recess Rflformingthe otherhalf of the mold. A helical spring S is arranged between the block R and the end of the guide-sleeve Rand serves to press the block R to the right and draw the spring-jaws S into the sleeve B, so as to keep the clutch formed by said jaws closed. Each spring-jaw S is provided at its free end with a U-shaped recess b for receiving the closed end of the eyelet a or a and with two guide-pins d, adapted to pass into corresponding notches of the other jaw. The end parts of the jaws are rounded and shaped to conform to the under side of the button m.

Between the hub O and the guide-sleeve R an aperture T is formed in the base-plate, through which the completed buttons can drop.

The lever V is pivoted at V on a standard on the base-plate of the machine to swing horizontally, and is provided at one end with an arm V having a set screw V resting against the front end of the lover Q. On the opposite end of the lever Van arm Wis held adjustable and is provided at its free end with a pivoted trigger W, that can swing in one direction only, and is held in line with the arm W by the spring VV ,secured to said arm and bearing on the trigger. On the front of the slide 13 a projection g is formed that can acton the trigger W.

W is a guide for the pivoted lever V, and Y is a rest for the rod of glass or other material from which the buttons are to be made.

7 The operation is as follows: Assume that the parts are in the positions shown in Fig. 1 and a button is to be made and the leverF is pressed upward at its outer end, so as to cause the shaft H to swing in the direction of. the arrow X, Fig. 3, whereby the slide J is moved in the direction of the arrow X Fig. 1, and thereby the rod L, carrying eyelets, is brought into position directly opposite the center of the clutch formed of the jaws S. At the same time that the slide J has been moved forward the bevel P of the cam-plate P on the arm P of the shaft H has pressed the rear end of theleverQ to the right, whereby the front end of said lever is pressed to the left, and acting on the block R has pressed the jaws S of the clutch in the direction of the arrow X Fig. 1, whereby the said jaws are opened. As the slideJ continues to move in the direction of the arrow X Fig. 1, its cam projection M strikes against the shoulder O of the cam-guide 0 whereby the end of the camlever M and the pusher N on the same are moved in the inverse direction of the arrow X Fig. 1,and the lowest eyelet a or a. of the row of eyelets on the rod L is pushed from under the lower end of the rod L in between the opened ends of the jaws S. The handle end of the lever F is now pressed downward, whereby the arms H and P are swung in the inverse direction of the arrow X, Fig. 3, and the cam P is withdrawn from the end of the lever Q, permitting the spring S to pull the jaws S in the inverse direction of the arrow X, whereby the said jaws are closed, the eyelet a being held between them. Said jaws, with groove R form that surface of the mold that shapes the under side of the button m, as is shown in Fig. 5. At the same time that the jaws are closed the slide J moves in the inverse direction of the arrow X Fig. 1, and

the cam projection M of the cam-lever M strikes against the shoulder O of the guide O,whereby the said cam-lever and the pusher N on the same are moved in the direction of the arrow X whereby the pusher N is withdrawn from below the lower end of the rod L, thus permitting the eyelets to drop a distance equal to the thickness of one eyelet. An eyelet new again rests on the slide J below the lower end of the rod L, ready for the next operation. After the eyelet has thus been introduced and locked in the jaws by moving the handle end of the lever F up and down the end of the heated glass bar (shown in dotted lines in Fig. l) is placed adjacent to the guide-sleeve R, and now the lever F is swung in an inverse direction of the arrow X whereby its inner end is disengaged from the pin G on the crank-arm G as the said pin passes out of the slot G in the inner end of the handle-lever F. By moving the handie-lever F in the inverse direction of the arrow X the slide B is moved correspondingly, and the hub O is pressed against the end of the piece of .heated glass held adjacent to the guide-sleeve R, and thereby a certain quantity of soft glass is pressed into the mold formedbytheendofthe mold-hubOand theend of the guide-sleeve R. A part of said glass projects beyond the edges of the mold and must be trimmed off. The lever F, being shifted in the manner described is directly over the notch F in the bottom guide-bar F and if it is now pressed downward its inner end is moved upward and it acts on the upper part of the hook-arm D moving the same upward, whereby the rock-shaft D is turned in such a manner as to move the sliding bar in the direction of the arrow X Fig. 6, whereby the collar 0 is moved in a like direction and passes over the edge of the molded buttons and trims oft edges of the same, as shown in Fig. 5. The outer end of the lever F is then raised again, whereby the collar 0 is withdrawn, as the inner end of the lever F now acts on the bottom shank of the hook-arm D and presses the same downward, thus moving the connecting-bar D in the inverse (Erection of the arrow X. The lever F is then moved in the direction of the arrow X so as to be below the notch F in the upper guiding-bar, whereby the pin G of the crank-arm G is again brought into the slot G in the inner end of the lever F, thus adjusting the parts for the next operation. As the slideB moves in the inverse direction of the arrow X to mold the button the projection g strikes the trigger WV on the arm W and swings the trigger to one side without affectingthelever V; but when theslide B is moved in the direction of the arrow X the projection g strikes the trigger W and swings it and the arm W to the left, whereby the lever V is turned on its pivot in the direction of the arrow X causing it to press the front end of the lever Q in the direction of the arrow X whereby the clutch is opened, thus permitting the finished button to drop out and through the opening T in the base-plate.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patentl. A machine formaking buttons from plastic material, constructed withla slide on the end of which one part of the mold is formed, and a handle-lever for shifting said slide, which lever is pivoted in said slide to swing laterally and is also pivoted in said slide to swing vertically, substantially as set forth.

2.- In a machine for making buttons from plastic material, the combination, with a slide on the end of which one part of the mold is formed, of a handle-lever mounted to swing laterally and vertically on said slide, a rocking shaft operated from said handle-lever, an eyelet-feeder operated from said rockin gshaft, and a lever for closing the mold, also operated from said rocking shaft, substantially as set forth. i

3. In a machine for making buttons from plastic material, the combination, with a mold composed of two sections, of a slide, a handlelever mounted to swing laterally and vertically on said slide, a rocking shaft operated from said handle-lever, a sliding plate operated from said rocking shaft, an eyelet-holder on said sliding plate, an eyelet-pusher pivoted on said sliding plate, and a lever for closing the mold, which lever is also operated from said rocking shaft, substantially as set forth.

4:. In a machine for making buttons from plastic material, the combination, with a mold composed .of two sections, of a slide on the end of which one part of the mold is formed, a handle-lever mounted on the slide to swing vertically and laterally, a rocking shaft operated from said handle-lever, a sliding plate connected with the rocking shaft and carrying an eyelet-support, an eyelet-pusher pivoted on said slide, fixed cams acting on the eyelet-pusher, and alever for closing the mold, which lever is also operated'from the abovementioned rocking shaft, substantially as set forth.

5. In a machine for making buttons from plastic material, the combination, with a slide on the end of which part of the mold is formed, of alever pivoted in said slide, a rocking shaft operated from said lever, a cam-lever operated from the rocking shaft, and an open section of the mold, which open section is pro vided with two gripping-jaws for holding an eyelet, said open section of the mold being acted upon by the cam-lever that receives motion from the rocking shaft, substantially as set forth.

6. In a machine for making buttons from plastic material, the combination, with a slide on which one section of a mold is formed, of a sliding clearing-collar on said mold-section, a rocking shaft, a bar connected with said rocking shaft and with the sliding clearingoollar, a hook-arm on said shaft, and a handle-lever pivoted on the slide, which handlelever is embraced by the hook-arm, substantially as set forth.

7. In a machine for making buttons from plastic material, the combination, with a slide on which one'section of a mold is formed, of sliding spring-jaws in the opposite part of the section and a trigger-lever operated from the slide and serving to force outward the springjaws1 in the mold-section, substantially as set ort 8. In a machine for making buttons from plastic material, the combination, with'a slide on which one mold-section is formed, of an opposite mold-section constructed with two spring-jaws,'a pivoted lever having an arm adapted to act on the springjaws of said mold-section, a projection on theslide, adapted to operate said lever, and an intermediate device interposed between said lever andthe:

spring-jaws, so as to move the spring-.jawsforward and permit themzto separate, substantially as set forth. v

9. In a machine for making buttons from plastic material, the combination, with a slide, of ahandle-lever pivoted to said slide to swing laterally and vertically, guide-bars" between which the lever can swing laterally, and notches in the edges of said guide-bars to permit the vertical movements of said lever, substantially as set forth. i

10. In a machine for making buttons from plastic material, the combination, with a slide, of ahaudle-lever pivoted inthe same to swing laterally and vertically and provided at its rear end with a slot, guide-bars for guiding the handle-lever in its lateral movements, which guide-bars are provided with notches in the edges that permit the vertical movements, a rocking shaft provided with an arm having a pin adapted to enter the slot in the end of the handle-lever, and eyelet-feeding and mold-closing devices operated from the rocking shaft, substantially as set forth.

11. In a machine for making buttons from plastic material, the combination,with a slide, of a handle -1ever pivoted in the same to swing laterally and Vertically, a slotted pivot through which the handle-lever passes, a rocking shaft provided with an arm having a pin that can enter a slot in the rear end of' the handle-lever, and an eyelet-feeding and moldclosing device operated from the rock-shaft, substantially as setforth.l 12. In a machine for'making buttons from plastic material, the combination, with a slide on which one section of a'mold is formed, of a sliding collar on said mold-section, an eyelet-feeder, an additional mold-section, and a handle-lever pivoted to swing vertically and laterally, which handle-lever operates the slidingcollar on the mold-section connected with the slide and also operates the eyeletfeeder. and the additional mold-section, substantially as set forth.

l3. Ina machine for making buttons from plastic material, the combination, with a slide, of an eyelet-pusher, a rod having its lower end directly above the pusher, and means for holding said rod,substantially as set forth.

14. In a machine for making buttons from plastic material,the combination, with a mold, of a slide, a rod supported on said slide, an eyelet-pusher on the slide, and an additional rod for holding a series of eyelets and supported from the above-mentioned rod to have its lower end directly above the pusher, substantially as set forth.

In testi ony that I claim the foregoing as my inventl n I have signed my name in presence of two subscribing witnesses.

MAX STIRN.

Witnesses:

OSCAR F. GUNZ, CHARLES SoHRoEDER. 

